# Radiative Two-Loop Neutrino Masses with Dark Matter

## TL;DR

This paper systematically constructs two-loop neutrino mass models incorporating dark matter, ensuring stability via Z2 symmetry, and highlights their phenomenological features.

## Contribution

It provides a comprehensive collection of genuine two-loop neutrino mass models with dark matter candidates, using simple added fields and symmetry considerations.

## Key findings

- Models include singlets or doublets of SU(2)L
- Dark matter stability achieved with Z2 symmetry
- Main neutrino mass contribution from two-loop diagrams

## Abstract

Using the Weinberg operator, we present a full collection of genuine two-loop models for neutrino mass generation, which contain a dark matter particle as one of the internal messengers. These models can be constructed simply by adding new fields that are singlets or doublets of SU(2)L. We ensure the stability of the dark matter candidate by the addition of a Z2 symmetry that will also be used to forbid tree level or one-loop diagrams. Thus we only present models where the main contribution for neutrinos masses is generated from the corresponding two-loop diagram. We also discuss a short outline corresponding to some phenomenological characteristics of these models.